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Polypyrrole coated tin oxide nanocomposite: an efficient dye adsorbent and microbial disinfectant
Journal of Dispersion Science and Technology ( IF 2.2 ) Pub Date : 2020-12-02 , DOI: 10.1080/01932691.2020.1850290
Pouria Khalaj 1 , Hannaneh Naghibi 2 , Mohsen Ghorbani 3
Affiliation  

Abstract

The present study was aimed to synthesize polypyrrole coated tin oxide (PPy/SnO2) nanocomposite in order to be effectively used as nanoadsorbent for the removal of Acid Blue 62 anionic dye and antibacterial agent for the disinfection of Gram-positive Staphylococcus aureus (S. aureus) and gram-negative Escherichia coli (E. coli) bacteria. The nanoadsorbent was fabricated by the polymerization of pyrrole in the presence of SnO2 nanoparticles and further characterized using Fourier Transform Infrared, x-ray diffraction, and Field Emission Scanning Electron Microscopy. The adsorption behavior of PPy/SnO2 nanocomposite for the removal of Acid Blue 62 was studied in a batch system with pH of solution, adsorbate–adsorbent contact time, dose of adsorbent, Acid Blue 62 dye concentration, and temperature considered as the main system parameters. The Langmuir adsorption isotherm was found to have the highest consistency with the equilibrium experimental data rendering maximum adsorption capacity of 75.102 mg g−1. The disk diffusion tests were applied to evaluate the ability of PPy/SnO2 for E. coli and S. aureus eradication; based on the obtained results, it was revealed that PPy/SnO2 provides exceptional disinfection ability for both bacteria, specifically S. aureus (inhibition zone diameter of 21.3 mm).



中文翻译:

聚吡咯涂层氧化锡纳米复合材料:一种高效的染料吸附剂和微生物消毒剂

摘要

本研究旨在合成聚吡咯包覆氧化锡(PPy/SnO 2)纳米复合材料,以有效用作去除酸性蓝62阴离子染料的纳米吸附剂和用于革兰氏阳性金黄色葡萄球菌S.金黄色葡萄球菌)和革兰氏阴性大肠杆菌大肠杆菌)细菌。纳米吸附剂是通过在 SnO 2纳米颗粒存在下聚合吡咯制备的,并使用傅里叶变换红外、X 射线衍射和场发射扫描电子显微镜进一步表征。PPy/SnO 2的吸附行为在批处理系统中研究了去除酸性蓝 62 的纳米复合材料,其中溶液的 pH 值、吸附质-吸附剂接触时间、吸附剂的剂量、酸性蓝 62 染料浓度和温度是主要系统参数。发现朗缪尔吸附等温线与平衡实验数据的一致性最高,最大吸附容量为 75.102 mg g -1。圆盘扩散试验用于评估PPy/SnO 2大肠杆菌金黄色葡萄球菌的根除能力;基于所获得的结果,表明 PPy/SnO 2对两种细菌,特别是金黄色葡萄球菌具有出色的消毒能力(抑制区直径为 21.3 毫米)。

更新日期:2020-12-02
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